CN112265344A - Anti-static hardened plate and preparation method thereof - Google Patents

Anti-static hardened plate and preparation method thereof Download PDF

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Publication number
CN112265344A
CN112265344A CN202011218852.XA CN202011218852A CN112265344A CN 112265344 A CN112265344 A CN 112265344A CN 202011218852 A CN202011218852 A CN 202011218852A CN 112265344 A CN112265344 A CN 112265344A
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static
hardened
film
coating
base material
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张景春
司家林
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Anhui Fulang Optical Materials Co ltd
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Anhui Fulang Optical Materials Co ltd
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Priority to CN202011218852.XA priority Critical patent/CN112265344A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/21—Anti-static

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to an anti-static hardened plate, which comprises a base material, wherein at least one side of the base material is provided with an anti-static hardened film, the anti-static hardened film comprises a flexible thin film and an anti-static hard coating, the flexible thin film and the base material are configured into a hot-pressing composite, and the anti-static hard coating is arranged on one side of the flexible thin film, which is opposite to the base material. The anti-static hardened plate is formed by compounding the base material and the anti-static hardened film, an anti-static coating does not need to be coated on the surface of the base material, the influence of the quality of the base material on the adhesive force and resistance of the coating is avoided, and the yield is reduced; meanwhile, the anti-static hardened coating can be coated on the surface of the flexible film in a roll-to-roll coating mode, so that the efficiency is high and the cost is low. In addition, a preparation method of the anti-static hardened plate is also provided.

Description

Anti-static hardened plate and preparation method thereof
Technical Field
The invention relates to the field of plate processing and manufacturing, in particular to an anti-static hardened plate and a preparation method thereof.
Background
Resin plates (such as PVC, PMMA, PETG, PC and the like) are widely applied to the fields of transparent protection of precision equipment, transparent partition of a dust-free room and the like due to good processability and electric insulation performance. But the common resin plate has higher surface resistivity (> 10)14Ω/cm2) In practical application, the resin plate needs to be subjected to antistatic treatment to reduce the surface resistivity to 106～108Ω/cm2To reduce static charge build-up. Meanwhile, as a protective material, the surface of the material should have certain hardness and wear resistance so as to clean the surface regularly.
The traditional anti-static hardened plate is mainly formed by coating anti-static hardened paint on the surface of a substrate to form a plate with dual functions of static prevention and hardening. The coating method mainly comprises curtain coating, spray coating, roll coating and the like, wherein the curtain coating process is mainly adopted. However, the antistatic resin plate manufactured by the curtain coating method has the following problems: 1) the problem of the uniformity of the resistance of the plate is solved, and the resistance deviation is large due to the thickness difference of the coating at the upper opening and the lower opening of the plate; 2) the production is carried out piece by piece, and the efficiency is low; 3) the product yield is related to the quality of the plate and the surface coating performance, and the reject ratio is high.
Disclosure of Invention
Therefore, a new antistatic hardened plate is needed. In addition, a preparation method of the anti-static hardened plate is also provided.
An anti-static hardened sheet material comprises a substrate, wherein at least one side of the substrate is provided with an anti-static hardened film, the anti-static hardened film comprises a flexible thin film and an anti-static hard coating, the flexible thin film and the substrate are configured into a hot-pressing composite, and the anti-static hard coating is arranged on the side, opposite to the substrate, of the flexible thin film.
The anti-static hardened board is formed by compounding the base material and the anti-static hardened film, and an anti-static coating is not required to be coated on the surface of the base material, so that the influence of the quality of the base material on the adhesive force and resistance of the coating is avoided, and the yield is reduced; meanwhile, the anti-static hardened coating can be coated on the surface of the flexible film in a roll-to-roll coating mode, so that the efficiency is high and the cost is low.
In one embodiment, the material of the substrate is the same as the material of the flexible film.
In one embodiment, the material of the base material is different from that of the flexible film, and a hot-melt adhesive is arranged between the base material and the flexible film.
In one embodiment, the hot-melt adhesive is a thermoplastic or thermosetting adhesive film.
In one embodiment, the substrate is a transparent plate or sheet, and the anti-static hardened film is a transparent layer.
In one embodiment, the anti-static hardening film is provided with a plurality of layers in succession.
In one embodiment, the thickness of the substrate is 1 to 50 mm.
Also provides a preparation method of the anti-static hardened plate, which comprises the following steps:
coating an anti-static hardening coating on the surface of the flexible film by adopting a roll-to-roll process, and curing the anti-static hardening coating to obtain an anti-static hardening film;
laminating the non-coating surface of the anti-static hardened film with a base material of the same material, or laminating the non-coating surface of the anti-static hardened film with a base material of a different material by placing a layer of hot-melt adhesive between the non-coating surface of the anti-static hardened film and the base material of the same material to obtain a laminated product;
placing the laminated product in a laminator, heating and rolling to ensure that the temperature is higher than the glass transition temperature of the flexible film and the base material which are made of the same material, or the temperature is higher than the bonding temperature of the hot-melt adhesive but higher than the glass transition temperature of any one of the material and the flexible film, and the pressure of the rolling time is 10-100 kgf/cm2Laminating the flexible film to the substrate to obtain the antistatic hard filmMelting the plate;
and cooling the anti-static hardened board in a pressurized environment.
The preparation method of the anti-static hardened board is formed by compounding the base material and the anti-static hardened film, and an anti-static coating is not required to be coated on the surface of the base material, so that the influence of the quality of the base material on the adhesive force and resistance of the coating is avoided, and the yield is reduced; when the anti-static hardened film is prepared, the anti-static hardened coating is coated on the surface of the flexible film in a roll-to-roll coating mode, so that the efficiency is high and the cost is low; when the substrate and the anti-static hardened film are compounded, the anti-static film and the transparent substrate are laminated in a hot pressing mode, the binding force between the film and the substrate is good, the yield can be greatly improved, meanwhile, the capacity is not limited by a coating mode, and a series of problems in the prior art are solved.
In one embodiment, the temperature rise speed during the temperature rise and pressure delay is 5-10 ℃/min.
In one embodiment, the step of cooling the anti-static hardened board in a pressurized environment includes: the holding pressure is 0.1 to 1kgf/cm2And the cooling rate is 3-5 ℃/min, and the temperature is cooled to be lower than 45 ℃ and then taken out.
Drawings
Fig. 1 is a schematic flow chart illustrating a method for manufacturing an anti-static hardened board according to an embodiment of the present invention.
Fig. 2 is a schematic view of the manufacturing method of the anti-static hardened board according to the embodiment of the invention after the anti-static coating is formed on the flexible film.
Fig. 3 is a schematic view of calendering antistatic transparent flexible films on both sides of the same type of substrate in the method for preparing the antistatic hardened plate according to the embodiment of the invention.
Fig. 4 is a schematic view of a single-side calendaring of an antistatic transparent flexible film on the same type of substrate in the method for preparing an antistatic hardened plate according to an embodiment of the present invention.
Fig. 5 is a schematic view of calendering antistatic transparent flexible films on two sides of different types of substrates in the method for preparing the antistatic hardened plate according to the embodiment of the invention.
Fig. 6 is a schematic view of a single-sided calendaring of an antistatic transparent flexible film on different types of substrates in the method for preparing an antistatic hardened plate according to an embodiment of the present invention.
The relevant elements in the figure are labeled as follows:
100. an anti-static hardened sheet material; 10. an antistatic hardened film; 110. a flexible film; 120. an antistatic hard coating; 20. a substrate; 30. and (3) a binder.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The embodiment of the invention provides an anti-static hardened plate, which comprises a base material, wherein at least one side of the base material is provided with an anti-static hardened film, the anti-static hardened film comprises a flexible thin film and an anti-static hard coating, the flexible thin film and the base material are configured into a hot-pressing composite part, and the anti-static hard coating is arranged on one side of the flexible thin film, which is opposite to the base material. When the anti-static hardened plate is specifically arranged, the base material can be a transparent plate or sheet, and the anti-static hardened film is a transparent layer, so that the anti-static hardened plate is a transparent anti-static hardened plate. The anti-static hardened plate is formed by compounding the base material and the anti-static hardened film, and an anti-static coating does not need to be coated on the surface of the base material like the traditional technology, so that the influence of the quality of the base material on the adhesive force and resistance of the coating is avoided, and the yield is reduced; meanwhile, the anti-static hardened coating can be coated on the surface of the flexible film in a roll-to-roll coating mode, so that the efficiency is high and the cost is low.
The following describes preferred embodiments of the antistatic hardened plate and the manufacturing method thereof according to the present invention with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a flow chart illustrating a method for manufacturing an anti-static hardened board 100 according to an embodiment of the invention. Referring to fig. 3 to fig. 6, schematic structural diagrams of the anti-static hardened board 100 according to different embodiments are respectively shown.
In the embodiment shown in fig. 3, the anti-static hardened sheet material 100 comprises a substrate 20, and two sides of the substrate 20 are respectively provided with an anti-static hardened film 10, wherein the anti-static hardened film 10 comprises a flexible film 110 and an anti-static hard coating 120 cured on the surface of the flexible film 110. The material of the substrate 20 is the same as that of the flexible film 110. If the substrate 20 is made of PVC, the flexible film 110 is also made of PVC.
In the embodiment shown in fig. 4, the anti-static hardened sheet material 100 comprises a substrate 20, and only one side of the substrate 20 is provided with the anti-static hardened film 10, wherein the anti-static hardened film 10 comprises a flexible film 110 and an anti-static hard coating 120 cured on the surface of the flexible film 110. The material of the substrate 20 is the same as that of the flexible film 110. If the substrate 20 is made of PVC, the material of the thin film 110 is also PVC.
In the embodiment shown in fig. 5, the anti-static hardened sheet material 100 includes a substrate 20, two sides of the substrate 20 are respectively provided with an anti-static hardened film 10, the anti-static hardened film 10 includes a flexible film 110 and an anti-static hard coating 120 cured on the surface of the flexible film 110, wherein a hot-melt adhesive 30 is provided between the flexible film 110 and the substrate 20. The material of the substrate 20 is different from that of the flexible film 110. The hot-melt adhesive 30 does not affect the transparency of the entire material.
In the embodiment shown in fig. 6, the anti-static hardened sheet material 100 comprises a substrate 20, wherein only one side of the substrate 20 is provided with an anti-static hardened film 10, the anti-static hardened film 10 comprises a flexible film 110 and an anti-static hard coating 120 cured on the surface of the flexible film 110, and a hot-melt adhesive 30 is arranged between the flexible film 110 and the substrate 20. The material of the substrate 20 is different from that of the flexible film 110. The hot-melt adhesive 30 does not affect the transparency of the entire material.
In the antistatic hardened plate material 100 according to each of the above embodiments, the base material 20 is one of PVC (polyvinyl chloride), PMMA (polymethyl methacrylate), PC (polycarbonate), PETG (polyethylene terephthalate-1, 4-cyclohexanedimethanol ester), and the like, but is not limited thereto. The thickness of the base material 20 is 1 to 50mm, and it is a hard plate or sheet. The thickness of the flexible film 10 is 0.03-0.2 mm. The hot-melt adhesive is a thermoplastic or thermosetting adhesive film, the thermoplastic adhesive film is made of PE (polyethylene) or PP (polypropylene), the thermosetting adhesive film is made of epoxy or acrylic acid, and the thickness of the thermosetting adhesive film is 0.05-0.1 mm.
The substrate 20 and the flexible film 110 may be colorless and transparent materials; the material may also be a colored transparent material, such as orange, dark brown, sapphire blue, agate green, etc., but not limited thereto. Further, the substrate 20 and the flexible film 110 may be the same color or different colors.
It can be understood that, when the anti-static hardened board 100 is a transparent anti-static hardened board, the light transmittance of the transparent substrate 20 and the transparent film is related to the thickness of the substrate 20, taking 5mm of colorless transparent material as an example, the light transmittance of the PVC substrate 20 is 65-80%, the light transmittance of the PMMA substrate 20 is 90-92%, and the light transmittance of the PC substrate 20 is 88-90%.
The anti-static hard coating layer 120 has an anti-static function, and is formed by curing an anti-static coating material. In the specific setting, the anti-static coating which can be cured by UV or heat is coated by a roll-to-roll process, and then a hard coating with an anti-static function is formed on the surface of the flexible film 110 by a drying and curing process. The roll-to-roll coating method includes one of blade coating, gravure coating, slit coating, and the like, but is not limited thereto.
Further, the antistatic component in the antistatic hard coating layer 120 is one or a mixture of several of ITO (indium tin oxide), ATO (arsenic trioxide), CNT (carbon nanotube), Graphene (Graphene), silver nanowire, Pdots/PSS (polythiophene), etc., but is not limited thereto.
Furthermore, the thickness of the coating of the anti-static hard coating 120 is 1-15 μm; surface resistance of 1.0X 105～1.0×1011Omega, preferably 1.0X 106～1.0×109Ω。
Further, the resin of the anti-static hard coating 120 is one or a mixture of several of acrylic resin, polyurethane resin, epoxy resin, polyurethane acrylic resin, epoxy acrylic resin, polyester acrylic resin, and polyether acrylic resin.
Further, the surface hardness of the antistatic hard coating layer 120 is: the PVC & PC & PETG material is HB, and the PMMA material is 4H.
The anti-static hardened board 100 of the embodiment is formed by compounding the base material 20 and the anti-static hardened film 10, and an anti-static coating does not need to be coated on the surface of the base material 20, so that the influence of the quality of the base material 20 on the adhesive force and resistance of the coating is avoided, and the yield is reduced; meanwhile, the anti-static hardened coating can be coated on the surface of the flexible film in a roll-to-roll coating mode, so that the efficiency is high and the cost is low.
Further, the antistatic hardened film 10 is continuously provided with a plurality of layers. Thus, the anti-static hardened board 100 also has an anti-static function, and is suitable for the situation where holes need to be formed in the board.
A method for manufacturing the antistatic hardened sheet 100 according to the embodiment of the present invention will be described with reference to fig. 1 and 2.
As shown in fig. 1, the method comprises the steps of:
s110, coating the anti-static hardening coating on the surface of the flexible film 110 by adopting a roll-to-roll process, and curing the anti-static hardening coating to obtain the anti-static hardening film 10 shown in FIG. 2. The roll-to-roll coating method includes one of blade coating, dimple coating, slit coating, and the like. Baking the antistatic hardened paint to cure
And S120, laminating the non-coating surface of the anti-static hardened film 10 with the base material 20 made of the same material, or laminating the non-coating surface of the anti-static hardened film with the base material 20 made of different materials by placing a layer of hot-melt adhesive between the non-coating surface and the base material 20 made of different materials to obtain a laminated product.
As shown in fig. 3 and 4, the material of the flexible film 110 is the same as that of the substrate 20, and the anti-static cured film 10 is directly laminated on the substrate 20. As shown in fig. 3, the antistatic cured film 10 may be laminated on both sides of the base material 20. As shown in fig. 4, the antistatic cured film 10 may be laminated only on one side of the substrate 20.
As shown in fig. 5 and 6, when the material of the flexible film 110 is different from that of the base material 20, a hot-melt adhesive, such as a hot-melt adhesive film, is disposed on one surface or both surfaces of the base material 20, and then the anti-static cured film 10 is laminated.
S130, placing the laminated product in a laminating machine, heating and rolling to enable the temperature to be higher than the glass transition temperature of the flexible film 110 and the base material 20 which are made of the same materials, or the temperature to be higher than the bonding temperature of the hot-melt adhesive but higher than the glass transition temperature of any one of the materials and the flexible film 110, and the pressure during rolling to be 10-100 kgf/cm2And compounding the flexible film 110 to the substrate 20 to obtain the anti-static hardened board 100. In this step, the flexible film 110 and the substrate 20 are formed into a hot-pressed composite.
In one example, the flexible film 110 and the substrate 20 are both made of PVC, and the laminated product is placed in a laminating machine having stainless steel upper and lower surfacesThe unevenness of the steel heating surface within 1m2 is less than 0.1mm, so that the flatness of the surface of the anti-static hardened plate 100 is ensured. In addition, a certain elastic silicon rubber buffer pad is arranged on the stainless steel heating surface to buffer the pressure acting on the flexible film 110, so that the anti-static hardened board is prevented from being crushed. The temperature rising speed is 5-10 ℃/min, and the pressure of the calendering is 10-100 kgf/cm2. The temperature rise rate and the pressure can avoid crushing the PVC material, and the glass transition temperature can be reached quickly, so that the flexible film 110 and the substrate 20 are combined together. It is understood that the pressure can be adjusted within the above range according to the hardness of the material. The rate of temperature rise may be other rates.
And S130, cooling the anti-static hardened plate 100 in a pressurized environment.
After the previous step is finished, the anti-static hardened sheet material 100 is obtained, and then the anti-static hardened sheet material 100 needs to be taken out. The difference between the temperature of the anti-static hardened sheet material 100 and the room temperature is large, and the anti-static hardened sheet material 100 is easily deformed when directly taken out. Therefore, in the step, in order to ensure that the plate is not deformed, a certain pressure intensity is set and then the temperature is reduced while the temperature is reduced, so that the temperature is reduced under the condition that the plate keeps the shape to reduce the difference with the room temperature.
Typically, room temperature in the plant is around 25 ℃. Therefore, it is preferable to take out the anti-static hardened sheet 100 when the temperature is lowered to not more than 20 ℃ higher than room temperature, i.e., below 45 ℃. The pressure in the cooling process is less than the pressure of calendering, and is generally 0.1-1 kgf/cm2And (4) finishing. Further, the cooling rate is 3-5 ℃/min, and under the cooling rate, on one hand, the cooling efficiency is high, and on the other hand, the influence on the quality due to product shrinkage caused by too fast cooling can be avoided.
The preparation method of the anti-static hardened board 100 is formed by compounding the base material 20 and the anti-static hardened film 10, and an anti-static coating does not need to be coated on the surface of the base material 20, so that the influence of the quality of the base material 20 on the adhesive force and resistance of the coating is avoided, and the yield is reduced; the roll-to-roll coating process coats the anti-static hardened coating on the surface of the flexible film 110 when the anti-static hardened film 10 is prepared, so that the efficiency is high and the cost is low; when the substrate 20 and the anti-static hardened film 10 are compounded, the anti-static film and the transparent substrate 20 are laminated in a hot pressing mode, the bonding force between the film and the substrate 20 is good, the yield can be greatly improved, meanwhile, the capacity is not limited by a coating mode, and a series of problems in the prior art are solved.
The following will further illustrate the specific implementation process of the method for manufacturing the anti-static hardened sheet material and the advantages of the anti-static hardened sheet material manufactured by the method in accordance with the present invention by combining the examples and comparative examples.
Example 1
1) Coating an antistatic coating on the surface of a PVC (polyvinyl chloride) coiled material with the thickness of 0.1mm by a roll-to-roll coating process, wherein the surface resistance is 106Omega, adhesion level 0, hardness HB.
2) And (3) laminating the anti-static PVC flexible film prepared in the step 1 with PVC plates of 500 × 500mm in length and width, wherein the length and width of the PVC flexible film are 2 sheets, and the PVC flexible film is laminated with PVC plates of 500 × 500mm in thickness of 5mm up and down, namely the PVC flexible films are laminated on both sides of the PVC plates.
3) Placing the laminate in a laminator with a silicon rubber buffer layer, heating to 65 deg.C, and setting the pressure to 10kgf/cm2The temperature rise rate is 5 ℃/min, and the temperature is kept for 10 min.
4) The pressure was set to 0.1kgf/cm2And cooling to 40 ℃ at the speed of 3 ℃/min, and taking out the product.
Example 2
1) Coating an antistatic coating on the surface of a PMMA (polymethyl methacrylate) coiled material with the thickness of 0.1mm by a roll-to-roll coating process, wherein the surface resistance is 106Omega, adhesion 0 grade, hardness 4H.
2) And (3) laminating the anti-static PMMA flexible film prepared in the step (1) with PMMA plates of 500 x 500mm2 in length and width, and 500 x 500mm and 3mm in thickness up and down, namely laminating the PMMA flexible film on both sides of the PMMA plates.
3) Placing the laminate in a laminator with a silicone rubber buffer layer, heating to 130 deg.C, and setting the pressure to 30kgf/cm2The temperature rise rate is 5 ℃/min, and the temperature is kept for 30 min.
4) The pressure was set to 0.5kgf/cm2And cooling to 40 ℃ at the speed of 3 ℃/min, and taking out the product.
Example 3
1) Coating an antistatic coating on the surface of a PC coiled material with the thickness of 0.1mm by a roll-to-roll coating process, wherein the surface resistance is 106Omega, adhesion level 0, hardness HB.
2) And (3) cutting the anti-static PC flexible film prepared in the step (1) into pieces with the length and width of 500 x 500mm2, and laminating the pieces with a 500 x 500mm rear PC board with the length and width of 4mm, namely laminating the PC flexible films on both sides of the PC board.
3) Placing the laminate in a laminator with a silicone rubber buffer layer, heating to 180 deg.C, and setting the pressure to 50kgf/cm2The temperature rise rate is 5 ℃/min, and the temperature is kept for 50 min.
4) The pressure was set to 0.6kgf/cm2And cooling to 40 ℃ at the speed of 5 ℃/min, and taking out the product.
Example 4
1) Coating an antistatic coating on the surface of a PC coiled material with the thickness of 0.1mm by a roll-to-roll coating process, wherein the surface resistance is 106Omega, adhesion level 0, hardness HB.
2) And (3) cutting the anti-static PC flexible film prepared in the step (1) into pieces with the length and width of 500 x 500mm2, laminating the pieces with a PMMA plate with the thickness of 500 x 500mm and the thickness of 4mm up and down, and arranging an acrylic hot melt adhesive film with the thickness of 0.05mm between the PMMA substrate and the PC flexible film.
3) Placing the laminate in a laminator with a silicone rubber buffer layer, heating to 120 deg.C, and setting the pressure to 50kgf/cm2The temperature rise rate is 5 ℃/min, and the temperature is kept for 50 min.
4) The pressure was set at 0.6kgf/cm2And cooling to 40 ℃ at the speed of 5 ℃/min, and taking out the product.
Example 5
1) Coating an antistatic coating on the surface of a 0.1mm PETG coiled material by a roll-to-roll coating process, wherein the surface resistance is 106Omega, adhesion level 0, hardness HB.
2) Cutting 500 x 500mm2 sheets of the anti-static PETG flexible film prepared in the step 1, and laminating the anti-static PETG flexible film and a 500 x 500mm 4mm PMMA plate up and down, wherein a layer of PE hot melt adhesive film with the thickness of 0.05mm is arranged between the PMMA substrate and the PETG flexible film.
3) Placing the laminate on a buffer layer of silicone rubberHeating to 80 deg.C in a laminator under a pressure of 40kgf/cm2The temperature rise rate is 5 ℃/min, and the temperature is kept for 20 min.
4) The pressure was set to 0.2kgf/cm2And cooling to 40 ℃ at the speed of 5 ℃/min, and taking out the product.
Comparative example 1
In accordance with example 1, the set temperature was changed to 100 ℃ and the temperature was higher.
Comparative example 2
In accordance with example 1, the pressure during the temperature raising and pressure delaying was changed to 0.1kgf/cm2。
Comparative example 3
Consistent with the embodiment 1, the pressure setting in the cooling process is cancelled in the fourth step, and the cooling speed is changed to 10 ℃/min;
comparative example 4
In accordance with example 5, a 0.05mm thick PE hot melt adhesive film was omitted from step two.
Performance testing
The transparent anti-static hardened resin plates of the experimental groups 1-5 and the comparative groups 1-4 are evaluated for various performance indexes, and the evaluation method comprises the following steps:
the surface resistance is tested according to the relevant specifications in SJ-T10694-2006 general Specification for antistatic detection of manufacturing and application systems of electronic products SJ-T10694-2006;
the light transmittance is tested according to the relevant specifications in GB/T2410-2008 determination of light transmittance and haze of transparent plastics;
the surface hardness refers to a test method of GB/T6739-2006 paint film hardness determination by a color paint and varnish pencil method;
the adhesion of the coating refers to a test method of GB/T9286 test for marking grids of paint films of colored paint and varnish.
The interlayer release between the flexible film and the substrate was tested by hand release.
The evaluation results are shown in table 1:
TABLE 1 evaluation results
Figure BDA0002761357550000111
As can be seen from Table 1, the experimental groups 1 to 3 adopt the flexible films and the base materials made of the same material, and can realize better adhesion between layers under certain pressure and temperature, and the experimental groups 4 to 5 adopt the flexible films and the base materials made of different materials, but use the hot melt adhesive film to increase the adhesion between layers. In comparative examples 1-4, the interlayer adhesion force is poor and the sheet material is warped due to the change of lamination process parameters.
In conclusion, due to the preparation method of the transparent anti-static hardening resin material in the technical scheme, the anti-static coating does not need to be coated on the surface of the base material resin plate, so that the influence of the quality of the base material on the adhesive force and the resistance of the coating is avoided, and the yield is reduced. Meanwhile, the antistatic coating is coated on the surface of the flexible film in a roll-to-roll coating mode, so that the efficiency is high and the cost is low. Through the mode of secondary calendering, will prevent that static flexible film and transparent substrate carry out the laminating, the cohesion between flexible film and the substrate is good to can promote the yield greatly, the productivity is not restricted by the coating mode simultaneously, has solved a series of problems among the prior art.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. An antistatic hardened board characterized by comprising:
the flexible film and the substrate are configured into a hot-pressing composite, and the anti-static hard coating is arranged on one side of the flexible film, which is opposite to the substrate.
2. The antistatic hardened plate according to claim 1, wherein the base material is the same as the flexible film.
3. The antistatic hardened plate as claimed in claim 1, wherein the base material is different from the flexible film, and a hot-melt adhesive is provided between the base material and the flexible film.
4. The antistatic hardened plate as claimed in claim 3, wherein the hot-melt type adhesive is a thermoplastic or thermosetting adhesive film.
5. The antistatic hardened plate according to claim 1, wherein the substrate is a transparent plate or sheet and the antistatic hardened film is a transparent layer.
6. The antistatic hardened plate material of claim 1, wherein the antistatic hardened film is provided with a plurality of layers in succession.
7. The antistatic hardened plate as claimed in claim 1, wherein the thickness of the base material is 1 to 50 mm.
8. The preparation method of the anti-static hardened board is characterized by comprising the following steps:
coating an anti-static hardening coating on the surface of the flexible film by adopting a roll-to-roll process, and curing the anti-static hardening coating to obtain an anti-static hardening film;
laminating the non-coating surface of the anti-static hardened film with a base material of the same material, or laminating the non-coating surface of the anti-static hardened film with a base material of a different material by placing a layer of hot-melt adhesive between the non-coating surface of the anti-static hardened film and the base material of the same material to obtain a laminated product;
placing the laminated product in a laminator, heating and rolling to ensure that the temperature is higher than the glass transition temperature of the flexible film and the base material which are made of the same material, or the temperature is higher than the bonding temperature of the hot-melt adhesive but higher than the glass transition temperature of any one of the material and the flexible film, and the pressure of the rolling time is 10-100 kgf/cm2Compounding the flexible film to the base material to obtain the anti-static hardened board;
and cooling the anti-static hardened board in a pressurized environment.
9. The method for preparing an antistatic hardened plate as claimed in claim 8, wherein the temperature rise rate during the temperature rise and rolling is 5-10 ℃/min.
10. The method for preparing an anti-static hardened sheet according to claim 9, wherein the step of cooling the anti-static hardened sheet in a pressurized environment comprises: the holding pressure is 0.1 to 1kgf/cm2And the cooling rate is 3-5 ℃/min, and the temperature is cooled to be lower than 45 ℃ and then taken out.
CN202011218852.XA 2020-11-04 2020-11-04 Anti-static hardened plate and preparation method thereof Pending CN112265344A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114248476A (en) * 2021-12-21 2022-03-29 湖州久益有机玻璃有限公司 Production method of anti-static organic glass substrate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114248476A (en) * 2021-12-21 2022-03-29 湖州久益有机玻璃有限公司 Production method of anti-static organic glass substrate
CN114248476B (en) * 2021-12-21 2023-10-03 湖州久益有机玻璃有限公司 Production method of antistatic organic glass plate substrate

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